//主页
import React, {Component} from 'react';
import {ActivityIndicator, ListView, RefreshControl, Text, View} from 'react-native';

import {homefiveStyle as styles} from '../../../../styles';

import {ShowoPostion} from '../../../actions/postionAction'; //加载action
import {connect} from 'react-redux';
import {bindActionCreators} from 'redux';
import Homefive_1 from './homefive_1';

const ds = new ListView.DataSource({
    rowHasChanged: (r1, r2) => r1 !== r2
});//listView 数据判断方式
class Homefive extends Component {
    // 初始化模拟数据
    constructor(props) {
        super(props);
        this.state = {
            uploading: true, //下拉刷新按钮状态 (初始化加载时处在loading状态)
            dwloading: false, //上拉刷新按钮状态
        };
        this.isFirst = true                         //页面第一次加载
    }

    //加载后渲染页面
    componentDidMount() {
        const {actions} = this.props;
        actions.ShowoPostion({page: 1}); //初始化查询
    }

    render() {
        //获取用户列表数据及是否等待状态
        const {postionList} = this.props.postions.data;
        let a = [];
        for (let i = 0; i < 3; i++) {
            a.push(postionList[i]);
        }
        //创建listView数据源
        const dataSource = ds.cloneWithRows(a);
        return (
            <View style={styles.fiveall}>
                <Text style={styles.fivetoptext}>推荐职位</Text>
                <ListView
                    refreshControl={                            //是否更新
                        <RefreshControl                         //刷新控件
                            refreshing={this.state.uploading && this.props.postions.isloading}                  //刷新时候的小控件
                        />}
                    enableEmptySections={true}
                    dataSource={dataSource}         //数据源(数组)
                    renderRow={this.renderRow.bind(this)}                 // 遍历数组的回调函数
                    contentContainerStyle={styles.homefivel}
                />
            </View>
        )
    }

    //刷新隐藏按钮
    componentDidUpdate() {
        if (this.state.uploading && !this.props.postions.isloading) {
            this.setState({
                uploading: false //下拉刷新按钮状态：隐藏
            })
        }
        if (this.state.dwloading && !this.props.postions.isloading) {
            this.setState({
                dwloading: false //上拉刷新按钮状态：隐藏
            })
        }
    }

    //下拉刷新开始
    _onRefresh() {
        this.props.postions.isloading = true; //设置为加载状态
        const {actions} = this.props;
        actions.ShowoPostion({page: 1});
        this.setState({
            uploading: true //下拉刷新按钮状态：显示
        });
    }

    renderFooter() {
        if (!this.props.postions.ret) {
            //console.log("请求失败");
        }
        if (this.state.dwloading) {
            return (<View style={{marginVertical: 10}}>
                <ActivityIndicator
                    animating={true}
                    style={{height: 10, alignItems: 'center', justifyContent: 'center', padding: 1,}}
                    size="small"/>
            </View>);
        }
        if (this.state.uploading) {
            return (<View style={{marginVertical: 10, height: 100, alignItems: 'center', justifyContent: 'flex-end'}}>
                <Text>玩命加载ing</Text>
            </View>);
        }
        return (<View style={{marginVertical: 10}}/>);
    }

    //list子项加载方法
    renderRow(rowData) {
        return (
            <Homefive_1
                postion={rowData}
                navigation={this.props.navigation}
            />
        )
    }
}

//组合action
let actions = {
    ShowoPostion
};

//连接state到props
const mapStateToProps = state => {
    return {
        postions: state.ShowPostion             //自己的reducers
    }
};

//连接action
const mapDispatchToProps = (dispatch) => {
    return {
        actions: bindActionCreators(actions, dispatch)
    }
};

//导出组合好的组件(组合后状态改变重新渲染组合组件的页面)
export default connect(
    mapStateToProps, mapDispatchToProps
)(Homefive);